Write a JAVA program to create an Array List for objects of type String, and then several strings are added to it. Some of the elements are removed and the list is displayed again.Input-Output form:1.Addition2.Deletion3.Display4.Count number of elementsInput Choice: 1Enter element: AInput Choice: 1Enter element: BInput Choice: 1Enter element: CInput Choice: 2Enter element: CInput Choice: 3OutputàABInput Choice: 4Outputà2
Question
Write a JAVA program to create an Array List for objects of type String, and then several strings are added to it. Some of the elements are removed and the list is displayed again.Input-Output form:1.Addition2.Deletion3.Display4.Count number of elementsInput Choice: 1Enter element: AInput Choice: 1Enter element: BInput Choice: 1Enter element: CInput Choice: 2Enter element: CInput Choice: 3OutputàABInput Choice: 4Outputà2
Solution 1
Here is a simple Java program that implements the functionality you described:
import java.util.ArrayList;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
ArrayList<String> list = new ArrayList<>();
Scanner scanner = new Scanner(System.in);
int choice;
String element;
do {
System.out.println("1.Addition\n2.Deletion\n3.Display\n4.Count number of elements\nInput Choice: ");
choice = scanner.nextInt();
switch (choice) {
case 1:
System.out.println("Enter element: ");
element = scanner.next();
list.add(element);
break;
case 2:
System.out.println("Enter element: ");
element = scanner.next();
list.remove(element);
break;
case 3:
System.out.println("Output: " + list);
break;
case 4:
System.out.println("Output: " + list.size());
break;
default:
System.out.println("Invalid choice. Please enter a valid option.");
}
} while (choice != 0);
}
}
This program creates an ArrayList of Strings and uses a Scanner to get user input. It then uses a switch statement to perform different actions based on the user's choice. The user can add elements to the list, remove elements from the list, display the list, or count the number of elements in the list. The program will continue to prompt the user for input until they enter 0.
Solution 2
Here is a simple Java program that implements the functionality you described:
import java.util.ArrayList;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
ArrayList<String> list = new ArrayList<>();
Scanner scanner = new Scanner(System.in);
int choice;
String element;
do {
System.out.println("1.Addition\n2.Deletion\n3.Display\n4.Count number of elements\nInput Choice: ");
choice = scanner.nextInt();
switch (choice) {
case 1:
System.out.println("Enter element: ");
element = scanner.next();
list.add(element);
break;
case 2:
System.out.println("Enter element: ");
element = scanner.next();
list.remove(element);
break;
case 3:
System.out.println("Output: " + list);
break;
case 4:
System.out.println("Output: " + list.size());
break;
default:
System.out.println("Invalid choice");
}
} while (choice >= 1 && choice <= 4);
}
}
This program creates an ArrayList of Strings and uses a Scanner to get user input. It then uses a switch statement to perform different actions based on the user's choice. The user can add elements to the list, remove elements from the list, display the list, or count the number of elements in the list. The program will continue to prompt the user for input until they enter a number outside of the range 1-4.
Solution 3
Here is a simple Java program that implements the functionality you described:
import java.util.ArrayList;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
ArrayList<String> list = new ArrayList<>();
Scanner scanner = new Scanner(System.in);
int choice;
String element;
do {
System.out.println("1.Addition\n2.Deletion\n3.Display\n4.Count number of elements\n");
System.out.print("Input Choice: ");
choice = scanner.nextInt();
switch (choice) {
case 1:
System.out.print("Enter element: ");
element = scanner.next();
list.add(element);
break;
case 2:
System.out.print("Enter element: ");
element = scanner.next();
list.remove(element);
break;
case 3:
System.out.println("Output: " + list);
break;
case 4:
System.out.println("Output: " + list.size());
break;
default:
System.out.println("Invalid choice");
}
} while (choice != 0);
}
}
This program creates an ArrayList of Strings and uses a Scanner to get user input. It then uses a switch statement to perform different actions based on the user's choice. The user can add elements to the list, remove elements from the list, display the list, or display the number of elements in the list. The program will continue to prompt the user for input until they enter 0.
Solution 4
Here is a simple Java program that implements the functionality you described:
import java.util.ArrayList;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
ArrayList<String> list = new ArrayList<>();
Scanner scanner = new Scanner(System.in);
int choice;
String element;
do {
System.out.println("1.Addition\n2.Deletion\n3.Display\n4.Count number of elements\nInput Choice: ");
choice = scanner.nextInt();
switch (choice) {
case 1:
System.out.println("Enter element: ");
element = scanner.next();
list.add(element);
break;
case 2:
System.out.println("Enter element: ");
element = scanner.next();
list.remove(element);
break;
case 3:
System.out.println("Output: " + list);
break;
case 4:
System.out.println("Output: " + list.size());
break;
default:
System.out.println("Invalid choice");
}
} while (choice != 0);
}
}
This program creates an ArrayList of Strings and uses a Scanner to get user input. The user can choose to add an element to the list, remove an element from the list, display the list, or count the number of elements in the list. The program will continue to prompt the user for input until they enter 0.
Solution 5
Here is a simple Java program that implements the functionality you described:
import java.util.ArrayList;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
ArrayList<String> list = new ArrayList<>();
Scanner scanner = new Scanner(System.in);
int choice;
String element;
do {
System.out.println("1.Addition\n2.Deletion\n3.Display\n4.Count number of elements\n");
System.out.print("Input Choice: ");
choice = scanner.nextInt();
switch (choice) {
case 1:
System.out.print("Enter element: ");
element = scanner.next();
list.add(element);
break;
case 2:
System.out.print("Enter element: ");
element = scanner.next();
list.remove(element);
break;
case 3:
System.out.println("Output: " + list);
break;
case 4:
System.out.println("Output: " + list.size());
break;
default:
System.out.println("Invalid choice");
}
} while (choice >= 1 && choice <= 4);
}
}
This program creates an ArrayList of Strings and uses a Scanner to get user input. It then uses a switch statement to perform different actions based on the user's choice. The user can add elements to the list, remove elements from the list, display the list, or count the number of elements in the list. The program will continue to prompt the user for input until they enter a choice outside of the range 1-4.
Solution 6
Here is a simple Java program that follows your instructions:
import java.util.ArrayList;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
ArrayList<String> list = new ArrayList<>();
Scanner scanner = new Scanner(System.in);
int choice;
String element;
do {
System.out.println("1.Addition\n2.Deletion\n3.Display\n4.Count number of elements\nInput Choice: ");
choice = scanner.nextInt();
scanner.nextLine(); // consume newline
switch (choice) {
case 1:
System.out.println("Enter element: ");
element = scanner.nextLine();
list.add(element);
break;
case 2:
System.out.println("Enter element: ");
element = scanner.nextLine();
list.remove(element);
break;
case 3:
System.out.println("Output: " + list);
break;
case 4:
System.out.println("Output: " + list.size());
break;
default:
System.out.println("Invalid choice. Please enter a number between 1 and 4.");
}
} while (choice >= 1 && choice <= 4);
}
}
This program creates an ArrayList of Strings and uses a Scanner to get user input. It then uses a switch statement to perform different actions based on the user's choice. The user can add elements to the list, remove elements from the list, display the list, or count the number of elements in the list. The program will continue to prompt the user for input until they enter a number outside the range 1-4.
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